An efficient long-wavelength single-frequency DBR Tm3+-doped fiber laser at 2.1 μm based on 1610 nm in-band pumping
Based on a 2.0 cm long Tm ^3+ -doped fiber (TDF) and in-band pumped configuration, an efficient long-wavelength single-frequency distributed Bragg reflector (DBR) fiber laser at 2097 nm is demonstrated experimentally. With delicate optimization of the TDF length and the pump wavelength to consider t...
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| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
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| Series: | Applied Physics Express |
| Subjects: | |
| Online Access: | https://doi.org/10.35848/1882-0786/adcdbc |
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| Summary: | Based on a 2.0 cm long Tm ^3+ -doped fiber (TDF) and in-band pumped configuration, an efficient long-wavelength single-frequency distributed Bragg reflector (DBR) fiber laser at 2097 nm is demonstrated experimentally. With delicate optimization of the TDF length and the pump wavelength to consider the effective cavity length and pump absorption, a stable single-longitudinal-mode laser output of 10.4 mW is achieved under 1610 nm in-band pumping. The measured optical signal-to-noise ratio of the fiber laser is more than 59 dB, the linewidth is less than 9.1 kHz, and the relative intensity-noise is below −130 dB Hz ^−1 for the frequencies above 4 MHz. To the best of our knowledge, this is the first demonstration of a single-frequency DBR Tm ^3+ -doped fiber laser at a long operation wavelength of 2.1 μm. |
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| ISSN: | 1882-0786 |